Motor

Abstract

A motor includes a cylindrical stator core, a plurality of coils attached to the stator core, a bus bar configured to be electrically connected to at least one of the plurality of coils, and a temperature sensor attached to the bus bar. The bus bar has a plurality of passage portions. At least a portion of the temperature sensor is attached to the bus bar through each of the plurality of passage portions.

Description

Technical Field

[0001] The technology disclosed in this specification relates to a motor. Background Art

[0002] A stator, which is a component of a motor, includes a cylindrical stator core, a plurality of coils mounted on the stator core, and a plurality of bus bars. The plurality of coils include, for example, a U-phase coil, a V-phase coil, and a W-phase coil, and are wound around the inner circumferential surface of the stator core by a distributed winding method. The plurality of bus bars include a neutral bus bar and three lead-out bus bars. The neutral bus bar connects the U-phase coil, the V-phase coil, and the W-phase coil to form a neutral point of the plurality of coils. Each of the three lead-out bus bars is electrically connected to a corresponding one of the U-phase coil, the V-phase coil, and the W-phase coil.

[0003] Japanese Unexamined Patent Application Publication No. 2023-123262 discloses a motor in which a temperature sensor is mounted on a neutral bus bar. In this motor, the temperature sensor is tightly fitted into a hole formed in the neutral bus bar for installation. Summary of the Invention

[0004] The present disclosure provides a motor that stably holds a temperature sensor on a bus bar.

[0005] The motor according to the aspect of the present disclosure includes: a cylindrical stator core; a plurality of coils mounted on the stator core; a bus bar configured to be electrically connected to at least one of the plurality of coils; and a temperature sensor mounted on the bus bar. The bus bar has a plurality of passing portions. At least a part of the temperature sensor is respectively mounted on the bus bar through the plurality of passing portions.

[0006] At least a part of the temperature sensor is mounted in such a way that it is wound around the bus bar through the plurality of passing portions. Therefore, in the motor disclosed in this specification, the temperature sensor is stably held on the bus bar.

[0007] It may also be configured that, based on the motor according to the aspect of the present disclosure, at least one of the plurality of passing portions is a cutout portion formed on at least one of a pair of side edges extending in the longitudinal direction of the bus bar. If the passing portion is constituted by the cutout portion, the operation of passing the temperature sensor through the passing portion becomes easy. Therefore, the workability of mounting the temperature sensor on the bus bar is improved.

[0008] It can also be configured as follows: Based on the motor involved in the manner of the present disclosure, the pair of side edges of the above bus bar have a proximal side edge located on the stator core side and a distal side edge located on the side opposite to the proximal side edge. The above cutout portion can also be formed on the distal side edge of the above bus bar. If a cutout portion is formed on the distal side edge of the bus bar, the operator installing the temperature sensor on the bus bar can easily access the cutout portion formed on the bus bar, so that the operation of passing the temperature sensor through the passing portion becomes easy. Therefore, the workability of installing the temperature sensor on the bus bar is improved.

[0009] It can also be configured as follows: Based on the motor involved in the manner of the present disclosure, the above bus bar has an adjacent portion adjacent to the above cutout portion in the short side direction of the above bus bar. The above adjacent portion can also include a side edge protruding portion, a wall thickness portion, or a combination thereof. The above side edge protruding portion can also protrude from the above side edge of the above bus bar in the short side direction of the above bus bar. The wall of the above wall thickness portion can also be thicker than the portion adjacent to the above adjacent portion in the long side direction of the above bus bar. If a cutout portion is formed in the bus bar without taking any countermeasures, the cross-sectional area of the adjacent portion adjacent to the cutout portion (i.e., the cross-sectional area in the cross-section of the bus bar orthogonal to the long side direction) decreases, and the resistance of the bus bar increases. In the above one embodiment, the adjacent portion is composed of a side edge protruding portion, a wall thickness portion, or a combination thereof, so as to suppress the increase in the resistance of the adjacent portion.

[0010] It can also be configured as follows: Based on the motor involved in the manner of the present disclosure, the above cutout portion has: a first extension portion that is cut from the above side edge of the above bus bar along the short side direction of the above bus bar; and a second extension portion that is cut from the first extension portion along the long side direction of the above bus bar at a position away from the above side edge of the above bus bar. That is, at least a part of the cutout portion can also have an L-shaped part. If at least a part of the cutout portion has an L-shaped part, the temperature sensor is effectively prevented from falling off from the cutout portion, so that the temperature sensor is stably held on the bus bar.

[0011] It can also be configured as follows: Based on the motor involved in the manner of the present disclosure, the above multiple coils each have a coil protruding portion that protrudes from the above stator core on one side in the axial direction of the above stator core. It can also be configured as follows: The above bus bar is arranged adjacent to the coil protruding portion in the axial direction of the above stator core and extends in the circumferential direction of the above stator core.

[0012] It can also be configured as follows: Based on the motor involved in the manner of the present disclosure, the above multiple passing portions are arranged along the circumferential direction of the above stator core. Since the temperature sensor is installed along the long side direction of the bus bar, a longer range of the temperature sensor is stably held on the bus bar.

[0013] It can also be configured as follows: Based on the motor involved in the embodiment of the present disclosure, the plurality of passing portions respectively penetrate the bus bar along the radial direction of the stator core. In this embodiment, the temperature sensor can also pass through the bus bar from the inner side to the outer side (or from the outer side to the inner side) of the stator core in the radial direction, and then be installed on the bus bar by passing through the bus bar from the outer side to the inner side (or from the inner side to the outer side) of the stator core in the radial direction.

[0014] It can also be configured as follows: Based on the motor involved in the embodiment of the present disclosure, the temperature sensor has a thermistor temperature measuring portion and a cable portion connected to the thermistor temperature measuring portion. The thermistor temperature measuring portion can be installed on the bus bar through at least one of the plurality of passing portions. If the thermistor temperature measuring portion passes through the passing portion, the thermistor temperature measuring portion is installed close to the bus bar, so the sensitivity and response speed of the temperature sensor are improved.

[0015] It can also be configured as follows: Based on the motor involved in the embodiment of the present disclosure, the bus bar and the thermistor temperature measuring portion are integrally coated with resin. Through the resin, the thermistor temperature measuring portion is installed in close contact with the bus bar, so the sensitivity and response speed of the temperature sensor are improved.

[0016] It can also be configured as follows: Based on the motor involved in the embodiment of the present disclosure, the plurality of coils include a U-phase coil, a V-phase coil, and a W-phase coil. The bus bar can also be a neutral line bus bar that electrically connects the U-phase coil, the V-phase coil, and the W-phase coil to form the neutral point of the plurality of coils. Instead of this embodiment, the bus bar can be any one of the three lead wire bus bars provided corresponding to the U-phase coil, the V-phase coil, and the W-phase coil.

[0017] The following describes the details and further improvements of the motor disclosed in this specification.

[0018] The following describes the features, advantages, and technical and industrial significance of the exemplary embodiments of the present invention with reference to the accompanying drawings, in which the same reference numerals represent the same elements. Description of the Drawings

[0019] Figure 1 It is a diagram schematically showing a perspective view of the stator.

[0020] Figure 2 It is a cross-sectional view of the stator and is a diagram schematically showing a cross-sectional view parallel to the axial direction of the stator core.

[0021] Figure 3It is a cross-sectional view including a bus bar and a temperature sensor, and is a diagram schematically showing a cross-sectional view orthogonal to the axial direction of the stator core.

[0022] Figure 4 It is a top view schematically showing a modified example of the bus bar.

[0023] Figure 5 It is a top view schematically showing a modified example of the bus bar.

[0024] Figure 6 It is a top view schematically showing a modified example of the bus bar.

[0025] Figure 7 It is a top view schematically showing a modified example of the bus bar.

[0026] Figure 8 It is a top view schematically showing a modified example of the bus bar.

[0027] Figure 9 It is a top view schematically showing a modified example of the bus bar and a side view observed from the proximal side edge of a modified example of the bus bar. Detailed implementation mode

[0028]

Example

[0029] Hereinafter, with reference to the drawings, the stator as a component of the motor will be described. In addition, there are cases where the shapes of the constituent elements common among different drawings are changed for the purpose of clarifying the illustration, but the constituent elements with the same reference numerals denote the same constituent elements. The motor disclosed in this specification is not particularly limited, but is mounted on an electric vehicle, for example. The "electric vehicle" in this specification includes battery electric vehicles (BEVs), hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), fuel cell electric vehicles (FCEVs), etc.

[0030] As Figure 1 shown, the stator 1 includes a stator core 10, a plurality of segmented coils 20, a bus bar 30, and a temperature sensor 40.

[0031] Here, a cylindrical coordinate system composed of an axial direction, a radial direction, and a circumferential direction is defined based on the cylindrical stator core 10. The z-axis shown in the figure is located on the central axis of the stator core 10 and represents the axial direction of the stator core 10. In addition, in this specification, the positive direction of the z-axis is referred to as one side of the axial direction, and the negative direction of the z-axis is referred to as the other side of the axial direction. The r-axis shown in the figure is orthogonal to the z-axis and represents the radial direction of the stator core 10. In addition, in this specification, the positive direction of the r-axis is referred to as the outside in the radial direction, and the negative direction of the r-axis is referred to as the inside in the radial direction. The θ-axis shown in the figure is orthogonal to the z-axis and the r-axis and represents the circumferential direction of the stator core 10. In this specification, the positive direction of the θ-axis is referred to as one side of the circumferential direction, and the negative direction of the θ-axis is referred to as the other side of the circumferential direction.

[0032] The stator core 10 is formed, for example, by laminating a plurality of laminated steel plates made of a magnetic material in the axial direction. The stator core 10 has a cylindrical yoke portion 12 and a plurality of tooth portions 14 extending from the inner peripheral surface of the yoke portion 12 toward the inside in the radial direction. A rotor (not shown) is inserted into the central hole of the yoke portion 12. The plurality of tooth portions 14 respectively extend from one opening edge portion of the yoke portion 12 to the other opening edge portion along the axial direction, and are arranged at intervals from the tooth portions 14 adjacent in the circumferential direction. The space between the adjacent tooth portions 14 is referred to as a slot 16.

[0033] A plurality of segmented coils 20 are respectively inserted into two corresponding slots 16 among the plurality of slots 16 of the stator core 10. The plurality of segmented coils 20 are respectively flat wires formed by coating an insulator on the surface of a conductor (for example, copper). The plurality of segmented coils 20 respectively have a first coil protruding portion 22 and a second coil protruding portion 24 protruding from the slot 16 of the stator core 10 in the axial direction of the stator core 10. The first coil protruding portion 22 is a portion protruding from the slot 16 of the stator core 10 in the segmented coil 20 on one side in the axial direction. The second coil protruding portion 24 is a portion protruding from the slot 16 of the stator core 10 in the segmented coil 20 on the other side in the axial direction. The plurality of segmented coils 20 are respectively formed into a substantially U shape and then inserted into the slot 16 of the stator core 10 along the axial direction. Then, the first coil protruding portion 22 of the segmented coil 20 is bent. The front end of the bent first coil protruding portion 22 of the segmented coil 20 (corresponding to the peeled portion where the insulator is peeled off to expose the conductor) is welded to the front end of the first coil protruding portion 22 of the other bent segmented coil 20. The plurality of segmented coils 20 connected by welding constitute one coil. Thus, a U-phase coil, a V-phase coil, and a W-phase coil are wound around the inner peripheral surface of the stator core 10 in a distributed winding manner.

[0034] The bus bar 30 is disposed adjacent to the first coil protrusion 22 in the axial direction. Specifically, the bus bar 30 is disposed at a position slightly separated from the first coil protrusion 22 in the axial direction and within the range where the first coil protrusion 22 exists when viewed from the axial direction. The bus bar 30 has a shape in which a rectangular conductive plate is bent in the long side direction and extends along the circumferential direction. In this example, the bus bar 30 extends only within a part of the entire circumference of the stator core 10. Instead of this example, the bus bar 30 may extend over the entire circumference of the stator core 10.

[0035] The bus bar 30 has an inner main surface 32 and an outer main surface 34. The inner main surface 32 and the outer main surface 34 face each other in the radial direction and extend along the long side direction of the bus bar 30. The bus bar 30 also has a pair of proximal edges 36 and distal edges 38. The pair of proximal edges 36 and distal edges 38 face each other in the axial direction and extend in the long side direction of the bus bar 30. The proximal edge 36 is located on the side closer to the stator core 10 than the distal edge 38.

[0036] As Figure 1 and Figure 2 shown, the front end portions 28 of the segment coils 20, which are the respective one ends of the U-phase coil, V-phase coil, and W-phase coil, are joined to the bus bar 30. Specifically, each front end portion 28 is welded to the outer main surface 34 of the bus bar 30. In addition, the position where each front end portion 28 is joined to the bus bar 30 and their joining method are not particularly limited. In this way, the bus bar 30 is a neutral line bus bar that electrically connects the U-phase coil, V-phase coil, and W-phase coil to each other and forms the neutral point of these coils. In addition, although not particularly limited, when the motor has a neutral point terminal (not shown), the neutral line bus bar is electrically connected to the neutral point terminal. Such a neutral point terminal can be used for so-called neutral point charging and is electrically connected to an external DC power supply when charging a battery connected to the motor.

[0037] The front end portions (not shown) of the segment coils 20, which are the respective other ends of the U-phase coil, V-phase coil, and W-phase coil, are electrically connected to a corresponding one of three lead bus bars (not shown). Such three lead bus bars may, for example, extend along the circumferential direction on the outer side in the radial direction with respect to the stator core 10. In addition, although not shown in the figure, the three lead bus bars are electrically connected to the U-phase terminal, V-phase terminal, and W-phase terminal of the motor, respectively.

[0038] As Figure 1 and Figure 3As shown, the bus bar 30 has a first cutout portion 31 and a second cutout portion 33. Both the first cutout portion 31 and the second cutout portion 33 are formed on the distal side edge 38 of the bus bar 30 and penetrate between the inner main surface 32 and the outer main surface 34 of the bus bar 30 along the radial direction. The first cutout portion 31 and the second cutout portion 33 are arranged separately along the circumferential direction. In addition, in this example, only two cutout portions 31 and 33 are shown, but three or more cutout portions may be formed on the bus bar 30.

[0039] The temperature sensor 40 has a thermistor temperature measuring portion 42 and a cable portion 44 connected to the thermistor temperature measuring portion 42. The thermistor temperature measuring portion 42 is not particularly limited, but is, for example, an electronic component having a temperature measuring resistor body at its front end portion. The thermistor temperature measuring portion 42 has a structure in which two wires extending from the temperature measuring resistor body are covered with a resin tube, and is mostly a soft long strip except for the temperature measuring resistor body. The cable portion 44 also has a structure in which two wires are covered with a resin tube, and is mostly a soft long strip. The two wires of the cable portion 44 are electrically connected to the corresponding wires of the two wires constituting the thermistor temperature measuring portion 42. In addition, a connector (not shown) is connected to the end portion of the cable portion 44 on the side opposite to the end portion connected to the thermistor temperature measuring portion 42.

[0040] As Figure 1 shown, the thermistor temperature measuring portion 42 is respectively installed on the bus bar 30 through the first cutout portion 31 and the second cutout portion 33. In addition, the cable portion 44 may also be installed on the bus bar 30 through at least any one of the first cutout portion 31 and the second cutout portion 33. In this example, when observing from the front end of the cable portion 44 toward the thermistor temperature measuring portion 42, the thermistor temperature measuring portion 42 passes through the first cutout portion 31 from the inner main surface 32 of the bus bar 30 toward the outer main surface 34, and then passes through the second cutout portion 33 from the outer main surface 34 of the bus bar 30 toward the inner main surface 32 and is installed on the bus bar 30. The thermistor temperature measuring portion 42 is installed in such a way that it wraps around the bus bar 30 by reciprocating between the inner main surface 32 and the outer main surface 34 of the bus bar 30. Thereby, the temperature sensor 40 is stably held on the bus bar 30. In addition, since the first cutout portion 31 and the second cutout portion 33 are arranged separately from each other along the long side direction of the bus bar 30, a relatively long range of the thermistor temperature measuring portion 42 is stably held on the bus bar 30.

[0041] The first cutout portion 31 and the second cutout portion 33 formed on the distal side edge 38 of the bus bar 30 are exposed outward from the stator core 10 and are arranged at positions that can be easily accessed by an operator who installs the temperature sensor 40 on the bus bar 30. Therefore, the operation of passing the temperature sensor 40 through the first cutout portion 31 and the second cutout portion 33 becomes easy, and thus the workability of installing the temperature sensor 40 on the bus bar 30 is improved.

[0042] In this example, the thermistor temperature measuring section 42 is mounted on the bus bar 30 through the first cutout section 31 and the second cutout section 33. Therefore, the thermistor temperature measuring section 42 is mounted close to the bus bar 30. As a result, the heat generated in the bus bar 30 is efficiently conducted to the thermistor temperature measuring section 42, and thus the sensitivity and response speed of the temperature sensor 40 are improved.

[0043] As Figure 3 shown, the bus bar 30 and the thermistor temperature measuring section 42 are integrally covered with a resin 50. In addition, in Figure 1 and Figure 2 , for the purpose of making the illustration clear, the illustration is made in a state excluding the resin 50. The resin 50 is not particularly limited, but for example, it can be formed by coating a powder resin on the bus bar 30 and the thermistor temperature measuring section 42 to integrally cover the bus bar 30 and the thermistor temperature measuring section 42, or it can be formed by immersing the bus bar 30 and the thermistor temperature measuring section 42 in a molten resin to integrally cover the bus bar 30 and the thermistor temperature measuring section 42. In addition, the resin 50 can also be formed to integrally cover the welded joint portion at the front end of the first coil protruding portion 22. By mounting the thermistor temperature measuring section 42 in close contact with the bus bar 30 through the resin 50, the sensitivity and response speed of the temperature sensor 40 are improved. In addition, the heat generated in the bus bar 30 can be conducted to the thermistor temperature measuring section 42 via the resin 50, and thus, in this regard, the sensitivity and response speed of the temperature sensor 40 are also improved.

[0044] As described above, in the example where the bus bar 30 and the thermistor temperature measuring section 42 are integrally covered with the resin 50, before covering with the resin 50, it is necessary to position the thermistor temperature measuring section 42 relative to the bus bar 30. In addition, in the process of covering with the resin 50, it is necessary to hold the thermistor temperature measuring section 42 in a state in close contact with the bus bar 30. By providing the first cutout section 31 and the second cutout section 33 at specific positions of the thermistor temperature measuring section 42, the thermistor temperature measuring section 42 is accurately positioned relative to the bus bar 30. In addition, the thermistor temperature measuring section 42 that has passed through the first cutout section 31 and the second cutout section 33 is held in a state in close contact with the bus bar 30. In this way, in the case where the bus bar 30 and the thermistor temperature measuring section 42 are integrally covered with the resin 50, the technique of forming the first cutout section 31 and the second cutout section 33 in the bus bar 30 is particularly useful.

[0045] Hereinafter, modification examples of the bus bar 30 will be listed. In addition, for parts that effectively play the same role as the bus bar 30, the same reference numerals are given and their descriptions are omitted.

[0046] Figure 4The illustrated bus bar 130 is an example having a plurality of through holes 131 and 133. The temperature sensors 40 are respectively mounted to the bus bar 130 through the plurality of through holes 131 and 133. Although the plurality of through holes 131 and 133 reduce the workability of passing the temperature sensors 40 therethrough, they can prevent the temperature sensors 40 from falling off.

[0047] Figure 5 The illustrated bus bar 230 is an example in which a plurality of engaging portions 231 and 233 are formed by a plurality of protrusions protruding from the side edges of the bus bar 230. The plurality of protrusions are arranged at intervals in the longitudinal direction of the bus bar 230. The plurality of engaging portions 231 and 233 are defined by adjacent protrusions and are configured to be able to adjust the distance between adjacent protrusions to hold the temperature sensors 40. The temperature sensors 40 are respectively mounted to the bus bar 230 through the plurality of engaging portions 231 and 233.

[0048] As Figure 4 and Figure 5 shown in the modification, as a structure for stably holding the temperature sensors 40, various geometric shapes that penetrate the bus bar in the direction connecting a pair of main surfaces of the bus bar and through which the flexible strip-shaped temperature sensors 40 can pass can be adopted. In the present specification, a portion of the bus bar having various geometric shapes through which the temperature sensors 40 can pass is referred to as a passing portion. The plurality of passing portions formed in the bus bar may form a combination of a single type of passing portion (for example, only a combination of cutout portions), or may form a combination of different types of passing portions (for example, any combination of cutout portions, through holes, and engaging portions).

[0049] Figure 6 In the illustrated bus bar 330, a first cutout portion 31 is formed on one side edge of the bus bar 330, and a second cutout portion 33 is formed on the other side edge of the bus bar 330. The positions of the plurality of cutout portions 31 and 33 formed in the bus bar 330 can be appropriately adjusted according to the position and orientation of the bus bar 330.

[0050] Figure 7 In the illustrated bus bar 430, the first cutout portion 31 has a first extension portion 31a extending along the short side direction of the bus bar 330 from the side edge of the bus bar 430, and a second extension portion 31b extending along the long side direction of the bus bar 430 from the first extension portion 31a at a position away from the side edge of the bus bar 430. The same applies to the second cutout portion 33. Thus, both the first cutout portion 31 and the second cutout portion 33 are configured in an L shape. If the first cutout portion 31 and the second cutout portion 33 are configured in an L shape, the temperature sensors 40 are effectively prevented from falling off from the first cutout portion 31 and the second cutout portion 33, and thus the temperature sensors 40 are stably held on the bus bar 430.

[0051] Figure 8 The bus bar 530 shown is an example having a first adjacent portion 35 adjacent to the first cut portion 31 in the short side direction of the bus bar 530 and a second adjacent portion 37 adjacent to the second cut portion 33 in the short side direction of the bus bar 530. Both the first adjacent portion 35 and the second adjacent portion 37 have side edge protruding portions 39 protruding from the side edge of the bus bar 530 in the short side direction of the bus bar 530. If the side edge protruding portions 39 are not provided in the first adjacent portion 35 and the second adjacent portion 37, and the first cut portion 31 and the second cut portion 33 are formed in the bus bar 530, the cross-sectional areas of the first adjacent portion 35 and the second adjacent portion 37 (i.e., the areas of the cross-sections of the bus bar 530 orthogonal to the long side direction) are reduced, and the resistance of the bus bar 530 increases. In this example, since the first adjacent portion 35 and the second adjacent portion 37 respectively have the side edge protruding portions 39, an increase in the resistance of the first adjacent portion 35 and the second adjacent portion 37 is suppressed.

[0052] Figure 9 The bus bar 630 shown is an example in which the first adjacent portion 35 adjacent to the first cut portion 31 in the short side direction of the bus bar 630 has a wall thickness portion 52 with a wall thickness thicker than that of the portion adjacent to the first adjacent portion 35 in the long side direction of the bus bar 630. The same applies to the second adjacent portion 37 adjacent to the second cut portion 33. In this example, even if the first cut portion 31 and the second cut portion 33 are formed, a reduction in the cross-sectional areas of the first adjacent portion 35 and the second adjacent portion 37 is suppressed, thereby suppressing an increase in the resistance of the first adjacent portion 35 and the second adjacent portion 37. In addition, the first adjacent portion 35 and the second adjacent portion 37 may also have the side edge protruding portions 39 (see Figure 8 ) and the wall thickness portion (see Figure 9 ).

Claims

1. A motor, characterized in that, the motor comprises: a cylindrical stator core; a plurality of coils mounted on the stator core; a bus bar configured to be electrically connected to at least one of the plurality of coils, the bus bar having a plurality of passing portions; and a temperature sensor mounted on the bus bar, wherein at least a part of the temperature sensor is mounted on the bus bar by passing through each of the plurality of passing portions.

2. The motor according to claim 1, characterized in that, at least one of the plurality of passing portions is a cutout portion formed on at least one of a pair of side edges extending in the long side direction of the bus bar.

3. The motor according to claim 2, characterized in that, the pair of side edges of the bus bar have a proximal side edge located on the stator core side and a distal side edge located on the side opposite to the proximal side edge, and the cutout portion is formed on the distal side edge of the bus bar.

4. The motor according to claim 2, characterized in that, the bus bar has an adjacent portion adjacent to the cutout portion in the short side direction of the bus bar, the adjacent portion includes a side edge protruding portion, a wall thickness portion, or a combination thereof, the side edge protruding portion protrudes from the side edge of the bus bar in the short side direction of the bus bar, and the wall thickness portion has a wall thickness thicker than a portion adjacent to the adjacent portion in the long side direction of the bus bar.

5. The motor according to claim 2, characterized in that, the cutout portion has a first extending portion cut from the side edge of the bus bar along the short side direction of the bus bar and a second extending portion cut from the first extending portion along the long side direction of the bus bar at a position away from the side edge of the bus bar.

6. The motor according to claim 1, characterized in that, each of the plurality of coils has a coil protruding portion protruding from the stator core on one side in the axial direction of the stator core, the bus bar is disposed adjacent to the coil protruding portion in the axial direction of the stator core and extends in the circumferential direction of the stator core.

7. The motor according to claim 6, characterized in that, the plurality of passing portions are arranged along the circumferential direction of the stator core.

8. The motor according to claim 6, characterized in that, each of the plurality of passing portions penetrates the bus bar along the radial direction of the stator core.

9. The motor according to claim 1, characterized in that, the temperature sensor has a thermistor temperature measuring portion and a cable portion connected to the thermistor temperature measuring portion, and the thermistor temperature measuring portion is mounted on the bus bar by passing through at least one of the plurality of passing portions.

10. The motor according to claim 9, characterized in that, the bus bar and the thermistor temperature measuring portion are integrally coated with resin.

11. The motor according to any one of claims 1 to 10, characterized in that, the plurality of coils include a U-phase coil, a V-phase coil, and a W-phase coil, and the bus bar is a neutral line bus bar that electrically connects the U-phase coil, the V-phase coil, and the W-phase coil to form a neutral point of the plurality of coils.

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